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Wideband Delphi

📙 CTAL-TM

Official ISTQB Definition

An expert-based test estimation technique where a group of experts provides estimates, discusses them, and iterates until consensus is reached. Includes team discussion unlike traditional Delphi.

3 Ways to Think About It

💡
The Quick Take

Expert-based estimation where specialists discuss and converge on estimates.

🔍
Look Closer

An iterative estimation technique combining expert judgment with discussion.

🎯
The Bottom Line

Group estimation where experts share rationale until consensus emerges.

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